caste

A social class separated from others by distinctions of hereditary rank or profession or wealth.

(Hinduism) a hereditary social class among Hindus; stratified according to ritual purity.

In some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony.

Social status or position conferred by a system based on class.

“lose caste by doing work beneath one's station”